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前端特技——滑动出现菜单编辑

时间:2015-10-12 10:40:59      阅读:204      评论:0      收藏:0      [点我收藏+]

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效果图:

技术分享

 

代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
    <!-- <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"> -->
    <title>Document</title>
    <style>
        *{margin: 0;padding: 0;}
        ul{
            width: 100%;
        }
        li{
            width: 100%;
            height: 50px;
            line-height: 50px;
            list-style-type: none;
            text-align: center;
            border-bottom: 1px solid #ddd;
            cursor: pointer;
            position: relative;
        }

        li .btn-menu{
            position: absolute;
            top:0;
            right: 0;
            height: 50px;
            line-height: 50px;
        }

        .button{
            height: 48px;
            line-height: 48px;
            border: none;
            border-radius: 0;
            min-width: 52px;
            float: left;
            border-width: 1px;
            border-style: solid;
            cursor: pointer;
        }

        .delete{
            border-color: #e42012;
            background-color: #ef473a;
            color: #fff;
        }
        .cancle{
            border-color: #ddd;
            background-color: #ccc;
            color: #fff;
        }

        li a{
            position: absolute;
            z-index: 100;
            display: block;
            width: 100%;
            height: 100%;
            background-color: #fff;
            -webkit-transition-duration: 250ms;
            transition-duration: 250ms;
            -webkit-transition-timing-function: ease-in-out;
            transition-timing-function: ease-in-out;
            -webkit-transition-property: -webkit-transform;
            -moz-transition-property: -moz-transform;
            transition-property: transform;
        }
        .body{
            width: 100%;
            position: relative;
        }
        .content{
            width: 100%;
            height: 500px;
            background-color: green;
        }
        .example{
            width: 365px;
            height: 792px;
            position: absolute;
            top: 0;
            right: 0;
            overflow: hidden;
            background-image: url(http://www.ionicframework.com/img/phone-case.png);
        }
        .ex-content{
            margin-top: 90px;
            margin-left: 15px;
            width: 335px;
            height: 600px;
            overflow: hidden;
            background-color: #fff;
        }
        .head{
            width: 100%;
            height: 50px;
            line-height: 50px;
            color: #fff;
            background-color: #387ef5;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="body">
        <div class="content"></div>
        <div class="example">
            <div class="ex-content">
                <div class="head">
                    列表滑动菜单
                </div>
                <ul>
                    <li>
                        <a>1</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                    <li>
                        <a>2</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                    <li>
                        <a>3</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                    <li>
                        <a style="transform:translate3d(-116px, 0px, 0px)">4</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                    <li>
                        <a>5</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                    <li>
                        <a>6</a>
                        <div class="btn-menu">
                            <div class="delete button" onclick="deleteItem(this)">删除</div>
                            <div class="cancle button" onclick="cancleItem(this)">取消</div>
                        </div>
                    </li>
                </ul>
            </div>
        </div>
    </div>
</body>
</html>
<script src="http://cdn.bootcss.com/zepto/1.1.6/zepto.js"></script>
<script>
    //手势操作切换(支持触摸)
    var touchDevice = "ontouchstart" in window;
    var startEvt,moveEvt,endEvt;
    //选择不同事件
    if(touchDevice){
        startEvt="touchstart";
        moveEvt="touchmove";
        endEvt="touchend";
    }else{
        startEvt="mousedown";
        moveEvt="mousemove";
        endEvt="mouseup";            
    }

    $("ul>li").forEach(function(item,index){
        item.addEventListener(startEvt, startEvtHandler, false);
        item.addEventListener(moveEvt, moveEvtHandler, false);
        item.addEventListener(endEvt, endEvtHandler, false);
    });

    //按下之后移动30px之后就认为swipe开始
    var SWIPE_DISTANCE = 30;
    //swipe最大经历时间
    var SWIPE_TIME = 500;
    var pt_pos;
    var ct_pos;
    var pt_time;
    var pt_up_time;
    var pt_up_pos;
    //获取swipe的方向
    var getSwipeDirection = function(p2,p1){
        var dx = p2.x - p1.x;
        var dy = -p2.y + p1.y;    
        var angle = Math.atan2(dy , dx) * 180 / Math.PI;

        if(angle < 45 && angle > -45) return "right";
        if(angle >= 45 && angle < 135) return "top";
        if(angle >= 135 || angle < -135) return "left";
        if(angle >= -135 && angle <= -45) return "bottom";
    }

    function getTouchPos(e){
        var t = e.touches;
        if(t && t[0]) {
            return { x : t[0].clientX , y : t[0].clientY };
        }
        return { x : e.clientX , y: e.clientY };
    }

    function startEvtHandler(e){
        // e.stopPropagation();
        var touches = e.touches;
        if(!touches || touches.length == 1){//鼠标点击或者单指点击
            pt_pos = ct_pos = getTouchPos(e);
            pt_time = Date.now();
        }
    }

    function moveEvtHandler(e){
        // e.stopPropagation();
        e.preventDefault();
        ct_pos = getTouchPos(e);
    }
    function endEvtHandler(e){
        // e.stopPropagation();
        var dir;
        pt_up_pos = ct_pos;
        pt_up_time = Date.now();
        if(getDist(pt_pos,pt_up_pos) > SWIPE_DISTANCE && pt_up_time - pt_time < SWIPE_TIME){
            dir = getSwipeDirection(pt_up_pos,pt_pos);
            var li=$(this).closest("li");
            var cur=li.find("a");
            li.siblings().each(function(){
                $(this).find("a").css("transform",null);
            })
            if(dir==="left"){
                cur.css("transform","translate3d(-116px, 0px, 0px)");
            }else if(dir==="right"){
                cur.css("transform",null);
            }
        }
    }

    //计算两点之间距离
    var getDist = function(p1 , p2){
        if(!p1 || !p2) return 0;
        return Math.sqrt((p1.x - p2.x) * (p1.x - p2.x) + (p1.y - p2.y) * (p1.y - p2.y));
    }



    /////点击事件
    function deleteItem(e){
        var cur=$(e).closest("li").find("a");
        alert(cur.html());
    }

    function cancleItem(e){
        $(e).closest("li").find("a").css("transform",null);
    }
</script>

 

前端特技——滑动出现菜单编辑

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原文地址:http://www.cnblogs.com/xuhang/p/4870672.html

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